While these errors happen can you still access to the internet (Browser, YouTube) on the Q10 Pro?
Also try to give a fix ip to the NAS as well, if you haven't done that already.
And if you have other devices at home (Windows PC with SMB or some Android with SAMBA) try to make a Share on them as well and see if you can connect to them with the Box. And vice-versa as well, if you can connect from those devices to the Q10 Pro SAMBA share.
Also worth to try to plug out the cable and see if it's any better with the Wi-Fi connection on the Box. (Just for trouble shooting).
I've also read here that sometimes simply plugging out and after a few mins plugging back in the UTP cable on the Q10 Pro can help on some network issues.
But it's also possible that it might have be a strictly Router or NAS settings/permission etc. related issue...
I seem to have got it working but for how long is another matter!
Tired a heap of things and cant be sure what actually worked. but after each one I did a restart and got nothing until the end.
- changed network cable to different one
- installed samba performance server patch
- connected via wifi - kinda worked but very slow and major jittering during playback. then after another restart did not work? weird
- installed & reinstalled persistent mount points for network locations
- switched 24hz playback off and on
- installed BD iso menu addon
- set fixed ip / changed back to non-fixed and back to fixed.
- tried 2.4Ghz & 5Ghz wifi connections
- different network cable from NAS to switch
So after all that (and in a differnet order to the above list) it seems to now be worked. I gave it a few minutes before going into any of the media centre and kodi and it worked.
Hopefully i dont need to post again about accessing these files
cheers